28427933 has 8 divisors (see below), whose sum is σ = 30043200. Its totient is φ = 26824608.

The previous prime is 28427929. The next prime is 28427947. The reversal of 28427933 is 33972482.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28427933 - 2² = 28427929 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28427953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2153 + ... + 7841.

It is an arithmetic number, because the mean of its divisors is an integer number (3755400).

Almost surely, 2^28427933 is an apocalyptic number.

It is an amenable number.

28427933 is a deficient number, since it is larger than the sum of its proper divisors (1615267).

28427933 is a wasteful number, since it uses less digits than its factorization.

28427933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5971.

The product of its digits is 72576, while the sum is 38.

The square root of 28427933 is about 5331.7851607131. The cubic root of 28427933 is about 305.1980546476.

The spelling of 28427933 in words is "twenty-eight million, four hundred twenty-seven thousand, nine hundred thirty-three".